$ git clone -n https://gitee.com/src-opencloudos-rpms/libical.git /var/lib/mock/dist-oc9-build-210491-80606/root/chroot_tmpdir/scmroot/libical
Cloning into '/var/lib/mock/dist-oc9-build-210491-80606/root/chroot_tmpdir/scmroot/libical'...
$ git fetch origin 85704d8a960d658fb4d6bbb04fdb282f688356b3:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libical
 * [new ref]         85704d8a960d658fb4d6bbb04fdb282f688356b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85704d8 import libical-3.0.16-8.tl4